CN2491993Y

CN2491993Y - Communication cable joint

Info

Publication number: CN2491993Y
Application number: CN 01237868
Authority: CN
Inventors: 周志浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-05-17
Filing date: 2001-05-17
Publication date: 2002-05-15
Anticipated expiration: 2011-05-17

Abstract

The utility model relates to an improvement for a cable water joint, in particular to a joint which is used for a multi-core communication cable, the utility model is characterized in that inner holes are respectively arranged on the two sides of a rubber ring, a metal retainer ring is similar to the cable, and a plastic pipe is lined in a bobbin, thereby the utility model is more suitable to be used to seal the multi-core communication cable which joint multiple is bigger than the cable.

Description

The communication cable joint

Utility model is about the improvement to the communication cable joint, relates in particular to a kind of manufacturing, easy construction, can reusable communication cable joint.

The communication cable because open-air or set up with burying, so its joint requires to adopt waterproof construction, water joint commonly used is sheared the aluminium leather sheath and the outsourcing plastics pyrocondensation watertight composition that are the radiation otch by two and formed.In the use aluminium cover and outer heat-shrink tube are fit over the cable joint position, then by mode of heating (as using spray gun) the heat hot draw, make heat-shrink tube tightly wrapped up in joint area together with the aluminium cover by thermal contraction, because the radial shearing in two of aluminium cover, heat-shrink tube is subjected to its two ends of thermal contraction to form reducing waterproof " tying of holding with a firm grip " on cable.This pyrocondensation water joint be enclosed within when construction not only time-consuming, take a lot of work, and careless slightly over-heating in the pyrocondensation construction, the pyrocondensation watertight composition then can produce be full of cracks, causes scrapping of waterproof jacket.In addition, this water joint cover is owing to the cable of " holding with a firm grip " by thermal contraction forms waterproof " tying ", the tying grip force is poor, in long-time the use because of the variation of ambient temperature, the swollen shrinkage of cable heat, it is loosening to cause waterproof " tying " and cable " to hold with a firm grip ", influences water resistance, whole water joint is just scrapped in case leak, and needs to change again.This besides water joint one is to use the life-span short, generally has only 3 years left and right sides life-spans, needs often to safeguard to change, and can only disposablely use, and take maintenance apart as cable joint, joint is also just scrapped.

Chinese patent 94221718 discloses a kind of cable seal connector, its formation is that the rubber tube of conical head and the inner have with conehead and cooperate recessed round clamping nut to form by the female pipe in two ends, outer end, and this seal nipple generally only is applicable on single core or the small capacity cable and uses.The communication cable is owing to have many heart yearns to merge to form, and the joint area external diameter is than the cable several times that will " expand " itself, and above-mentioned like this joint rubber tube caves in when compressing easily, causes the rubber tube cable of can not holding with a firm grip, thereby do not reach the waterproof sealing effect.Chinese patent 95222152 disclosed telecommunication cable sealing drums, though can be used for having the telecommunication cable of multicore, for closing up in the joint area and the two of coordinating " expansion ", adopt two one ends to form structure to revolving by the thick cylinder of contraction mouth, this joint is extremely inconvenient in processing with in using, and still having is worth improved place.

The purpose of utility model is to overcome the deficiency of above-mentioned prior art, provides a kind of manufacturing and construction all easy, reusable, and water resistance is good, is particularly useful for the communication cable joint.

The utility model purpose is to realize in the following way, and utility model communication cable joint comprises the metal bobbin, the rubber ring and compress end socket of blocking water, and it is characterized in that respectively there is the endoporus metal collar similar to cable the said rubber ring both sides that block water.During sealing cable junctions, under the stopping of metal collar, compress compressing of end socket, the rubber ring that blocks water is caused extruding, force the rubber ring distortion endoporus that blocks water to shrink " the holding with a firm grip " of causing, play sealing function thereby reach waterproof to cable by metal bobbin two ends.

Below in conjunction with several embodiments, further specify the utility model structure.

Fig. 1 is the utility model first example structure schematic diagram.

Fig. 2 is the utility model second example structure schematic diagram.

Fig. 3 is utility model the 3rd an example structure schematic diagram.

Fig. 4 is utility model the 4th an example structure schematic diagram.

Fig. 5 is utility model the 5th an example structure schematic diagram.

Embodiment 1: referring to Fig. 1, cable joint is by putting the partly tapped thin-wall stainless steel sleeve pipe 1 in two ends of thick tieing, inner lining plastic tube 2, external diameter and stainless steel sleeve bore coincide, internal diameter and the identical rubber ring 4 that blocks water of the outside diameter of cable, the metal collar 3 and 5 of rubber ring both sides and rubber ring same structure is formed with the Screw-thread sealing plug 6 that the screw-internal thread fit internal diameter and the outside diameter of cable coincide.During housed joint, at first in two broken ends pack into successively on the cables Screw-thread sealing plug 6, metal collar 5, rubber waterproof circle 4 and metal collar 3, at last with inner lining plastic tube and stainless steel sleeve pipe box in the cable joint place, screw the two ends Screw-thread sealing plug successively, cause extruding to the rubber waterproof circle, make its distortion cause " holding with a firm grip " to cable, reach waterproof sealing.Inner lining plastic tube has two effects, and the one, can simplify the processing of sleeve pipe, metal collar is played position-limiting action, end socket is compressed rubber ring is pushed; The 2nd, have insulating effect simultaneously concurrently, omit the lining insulation.

Embodiment 2: referring to Fig. 2, as embodiment 1, stainless steel sleeve pipe 1 end is an external screw thread, and Screw-thread sealing plug 6 adopts and covers the shape female thread structure, and the rubber ring 4 that blocks water is set up in parallel two, and each rubber ring both sides is equipped with metal collar.

Embodiment 3: referring to Fig. 3, the introspection of stainless steel sleeve pipe is inner lining plastic tube slightly, and two internal diameter is processed block metal collar boss 7, and built-in two are set up in parallel the rubber ring that blocks water, and all there is metal collar each rubber ring both sides.

Embodiment 4: referring to Fig. 4, block water annular recess 8 is arranged in the middle of the rubber ring, the metal collar correspondence position has taper bulge loop 9, when screwing the spiral shell end socket, the taper evagination of metal collar inserts in the rubber ring annular recess that blocks water, increased extrusion deformation degree, produce tighter grip force than the plane rubber ring that blocks water, so block-water performance has been better the rubber ring that blocks water.

Embodiment 5: referring to Fig. 5, as described above, stainless steel sleeve pipe one end (or two ends) is processed with two spools of band base plate 10, and each spool is processed with internal thread (or external screw thread) respectively and cooperates with it and compresses end socket, is used for one-in-and-two-out (or two advance two go out) joint.

The threaded spool in band base plate termination, metal sleeve end can also be a plurality of, is used for the multidrop line joint.Utility model communication cable joint owing to installed metal collar additional in the rubber ring both sides that block water of the cable of holding with a firm grip, is made water-proof jacket thereby adapt to sealing-in joint multiple many multicore communication cable joints big than cable." holding with a firm grip " power that blocks water is big, and has constant " holding with a firm grip " power, even the swollen shrinkage of cable heat, " holding with a firm grip " power can not change basically, causes loosening leaking.Utility model communication cable joint can be rolled over dress and be repeatedly used, and only needs to change the rubber ring that blocks water, long service life.The liner short tube has omitted the processing of sleeve pipe two boss again, and it is easy to have a processing and fabricating.Two rubber rings and/or rubber ring annular indent have more increased rubber ring " holding with a firm grip " power to cable, have better sealing property.The multidrop line pipe end can be used for the multi-way cable joint.

Claims

1, a kind of communication cable joint comprises the metal bobbin, the rubber ring and compress end socket of blocking water, and it is characterized in that respectively there is the endoporus metal collar similar to cable the said rubber ring both sides that block water.

2,, it is characterized in that said metal bobbin is a light-wall pipe according to the described communication cable joint of claim 1.

3, according to claim 1 or 2 described communication cable joints, it is characterized in that in the said metal bobbin inner lining plastic tube being arranged.

4,, it is characterized in that said blocking water has annular recess between rubber ring endoporus and cylindrical according to the described communication cable joint of claim 1.

5,, it is characterized in that said metal collar one side has the taper bulge loop according to the described communication cable joint of claim 4.

6,, it is characterized in that two arranged side by side of the every end of the said rubber ring that blocks water according to the described communication cable joint of claim 1.

7,, it is characterized in that said metal cylinder tube end has the threaded spool in band base plate termination more than two according to the described communication cable joint of claim 1.